What does FID stand for?

Frontiers in Development

Elizabeth Field, Fishers Island, New York, United States

Financial Identification Number

five times daily

Free Induction Decay (Fourier Transform Spectroscopy)

File Expander Engine Descriptions Database

Microsoft Catalog Indexing Service File

File Identification

Format Identifier Field

First Input Delay

First Input Delay (FID) is a Core Web Vitals metric that captures a user's first impression of a site's interactivity and responsiveness. It measures the time from when a user first interacts with a page to the time when the browser is actually able to respond to that interaction.